21290+2211 HJ 1647 AB (NSV13740)
21h 28m 59.78s +22° 10' 45.9" P.A. 178.00 sep 41.5 mag 6.08,10.22 Sp M4-5III dist. 204.08 pc (665.71 l.y.)
| Coord 2000 |
21290+2211 |
|
Discov num |
HJ 1647 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 28 59.78 +22 10 45.9 |
|
| Date first |
1828 |
|
Date last |
2012 |
|
Obs |
24 |
|
| Pa first |
179 |
|
Pa last |
178 |
|
P.A. Now (θ) |
178° |
|
| Sep first |
30.0 |
|
Sep last |
41.5 |
|
Sep. Now (ρ) |
41.5" |
|
| Mag pri |
6.08 |
|
Mag sec |
10.22 |
|
delta mag (ΔM) |
4.14 |
|
Spectral class |
M4-5III (red) |
|
| Pri motion ra |
+034 |
|
Sec motion ra |
+033 |
|
| Pri motion dec |
+013 |
|
Sec motion dec |
+009 |
|
| Notes |
|
|
rPM=0.113 (< 0.3, Physical double)
This double is physical.
21290+2211 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
NSV13740 |
89737 |
21 28 60 +22 10 46 |
HJ 1647 AB |
2012 |
24 |
178 |
41.5 |
6.08 |
10.22 |
4.14 |
|
<=== |
| Show |
|
89737 |
21 28 60 +22 10 46 |
HJ 1647 AC |
2013 |
12 |
128 |
38.8 |
6.08 |
12.80 |
6.72 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV13740 |
|
Constellation |
Pegasus |
|
SAO |
89737 |
|
HIP |
106062 |
|
| Tycho2 |
1676-01905-1 |
|
Gaia DR2 |
1790986901279212672 |
|
HD |
204585 |
|
HR |
8223 |
|
| GC |
30078 |
|
BD |
BD+21 4555 |
|
Distance |
204.08 |
|
Distance ly |
665.71 |
|
